Reviewed By librado r (LAYTON, UT) Reviewed for a 1999 Ford Expedition —3/24/2011 9:15 PM
i like how my truck takes off more easy with less gas and the rpm is lower in idle.
Reviewed By Garry B (HOLT, MO) Reviewed for a 2012 Ford Expedition —12/21/2012 7:20 AM
Very easy to install (about 30min) Did improve the mileage (about 1 1/2 mpg). Im getting around 18.5 to 19.2mpg 60 to 80mph. Installed it on my 2012 F150 5.0 . It won't make the 5.0 run like a "big block". But it does make over-all mild improvements. The engine is also programed with a tuner. Id buy it again.